HUT70178A - Process for preparing 2,2-difluoro-ketene-silyl-acetals and alpha, alpha-difluoro-beta-silyloxy-1,3-dioxolane-4-propanoic acid esters - Google Patents

Process for preparing 2,2-difluoro-ketene-silyl-acetals and alpha, alpha-difluoro-beta-silyloxy-1,3-dioxolane-4-propanoic acid esters

Info

Publication number
HUT70178A
HUT70178A HU9403423A HU9403423A HUT70178A HU T70178 A HUT70178 A HU T70178A HU 9403423 A HU9403423 A HU 9403423A HU 9403423 A HU9403423 A HU 9403423A HU T70178 A HUT70178 A HU T70178A
Authority
HU
Hungary
Prior art keywords
alpha
difluoro
acetals
silyloxy
dioxolane
Prior art date
Application number
HU9403423A
Other languages
Hungarian (hu)
Other versions
HU219466B (en
HU9403423D0 (en
Inventor
Thomas Charles Britton
Original Assignee
Lilly Co Eli
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lilly Co Eli filed Critical Lilly Co Eli
Publication of HU9403423D0 publication Critical patent/HU9403423D0/en
Publication of HUT70178A publication Critical patent/HUT70178A/en
Publication of HU219466B publication Critical patent/HU219466B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02—Silicon compounds
    • C07F7/08—Compounds having one or more C—Si linkages
    • C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
    • C07F7/1804—Compounds having Si-O-C linkages
    • C07F7/1872—Preparation; Treatments not provided for in C07F7/20
    • C07F7/188—Preparation; Treatments not provided for in C07F7/20 by reactions involving the formation of Si-O linkages

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)

Abstract

A process for preparing 2,2-difluoroketene silyl acetals and alpha , alpha -difluoro- beta -silyloxy-1,3-dioxolane-4-propanoic acid esters using these acetals.
HU9403423A 1993-11-30 1994-11-29 Process for preparing 2,2-difluoro-ketene-silyl-acetals HU219466B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16054993A 1993-11-30 1993-11-30
US30712294A 1994-09-16 1994-09-16

Publications (3)

Publication Number Publication Date
HU9403423D0 HU9403423D0 (en) 1995-02-28
HUT70178A true HUT70178A (en) 1995-09-28
HU219466B HU219466B (en) 2001-04-28

Family

ID=26856978

Family Applications (2)

Application Number Title Priority Date Filing Date
HU9403423A HU219466B (en) 1993-11-30 1994-11-29 Process for preparing 2,2-difluoro-ketene-silyl-acetals
HU9904356A HU224710B1 (en) 1993-11-30 1994-11-29 Process for producing alfa,alfa-difluoro-beta-silyloxy-1,3-dioxolane-4-propanoic acid esters

Family Applications After (1)

Application Number Title Priority Date Filing Date
HU9904356A HU224710B1 (en) 1993-11-30 1994-11-29 Process for producing alfa,alfa-difluoro-beta-silyloxy-1,3-dioxolane-4-propanoic acid esters

Country Status (14)

Country Link
US (1) US5618951A (en)
EP (1) EP0655454B1 (en)
JP (1) JP3615253B2 (en)
KR (2) KR100344363B1 (en)
AT (1) ATE204283T1 (en)
BR (1) BR9404776A (en)
CA (1) CA2136788C (en)
DE (1) DE69427955T2 (en)
DK (1) DK0655454T3 (en)
ES (1) ES2159296T3 (en)
FI (1) FI115461B (en)
HU (2) HU219466B (en)
IL (1) IL111793A (en)
PT (1) PT655454E (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2239891A1 (en) 1995-12-13 1997-06-19 John Ashley Weigel .alpha., .alpha.-difluoro-.beta.-hydroxy thiol esters and their synthesis
US6001994A (en) * 1995-12-13 1999-12-14 Eli Lilly And Company Process for making gemcitabine hydrochloride
US5756775A (en) * 1995-12-13 1998-05-26 Eli Lilly And Company Process to make α,α-difluoro-β-hydroxyl thiol esters
US7067600B2 (en) * 2001-08-16 2006-06-27 The Goodyear Tire & Rubber Company Modified silane compounds
KR100578616B1 (en) * 2004-07-23 2006-05-10 한미약품 주식회사 Method for the preparation of d-erythro-2,2-difluoro-2-deoxy-1-oxoribose
JP5284266B2 (en) * 2006-11-03 2013-09-11 ビーエーエスエフ ソシエタス・ヨーロピア Process for the preparation of difluoromethylpyrazolylcarboxylate
AU2007338031B2 (en) * 2006-12-21 2012-08-16 Basf Se Process for preparing fluoromethyl-substituted heterocyclic compounds
JP5559066B2 (en) 2008-02-29 2014-07-23 ビーエーエスエフ ソシエタス・ヨーロピア Process for producing alkyl 2-alkoxymethylene-4,4-difluoro-3-oxobutyrate
US8314233B2 (en) * 2008-05-02 2012-11-20 Basf Se Process for preparing 2-(aminomethylidene)-4,4-difluoro-3-oxobutyric esters
EP2297111B1 (en) * 2008-05-02 2012-06-20 Basf Se Method for the production of halogen-substituted 2-(aminomethylidene)-3- oxobutyric acid esters
DK2288597T3 (en) * 2008-05-05 2015-01-26 Basf Se PROCESS FOR THE PREPARATION OF 1,3,4-SUBSTITUTED pyrazole
EP2285779B1 (en) 2008-05-08 2013-03-27 Basf Se Method for manufacturing aryl carboxamides
ATE555098T1 (en) * 2008-07-21 2012-05-15 Basf Se METHOD FOR PRODUCING 1,3-DISUBSTITUTED PYRAZOLECARBONIC ACID ESTERS
JP5540776B2 (en) * 2010-03-05 2014-07-02 セントラル硝子株式会社 Method for producing difluoroacetic acid ester
CN113603669A (en) * 2021-08-06 2021-11-05 江苏八巨药业有限公司 Preparation method of gemcitabine key intermediate

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4417034A (en) * 1981-06-30 1983-11-22 E. I. Du Pont De Nemours & Co. Living polymers and process for their preparation
US4508880A (en) * 1981-06-30 1985-04-02 E. I. Du Pont De Nemours And Company "Living" polymers and process for their preparation
US4414372A (en) * 1982-06-17 1983-11-08 E. I. Du Pont De Nemours & Co. Process for preparing living polymers
US4482729A (en) * 1984-03-04 1984-11-13 Daikin Kogyo Co., Ltd. Fluoroalkyl silyl ketene acetals and a process for preparing the same
US4780554A (en) * 1984-11-20 1988-10-25 Union Carbide Corporation O-silylated ketene acetals and enol ethers and method of preparation
US4754046A (en) * 1987-06-25 1988-06-28 Dow Corning Corporation Stabilized silyl ketene acetals
US4824981A (en) * 1987-07-06 1989-04-25 Dow Corning Corporation Process to produce silyl ketene acetals
US4746750A (en) * 1987-08-31 1988-05-24 Dow Corning Corporation Synthesis of silyl ketene acetal from allyl 2-organoacrylates
JP2594605B2 (en) * 1988-03-12 1997-03-26 鹿島石油株式会社 Optically active α, α-difluoro-β-hydroxycarbonyl compound
US4824980A (en) * 1988-09-02 1989-04-25 Dow Corning Corporation Process to produce O-silyl O,N-ketene acetals
JPH0267250A (en) * 1988-09-02 1990-03-07 Asahi Glass Co Ltd Production of 2,2-difluoro-3-hydroxycarboxylic acid derivative
KR900012940A (en) * 1989-02-14 1990-09-03 사와무라 하루오 Process for preparing organosilicon compound
JPH02270841A (en) * 1989-04-12 1990-11-05 Asahi Glass Co Ltd Production of 2,2-difluoro-3,4,5-trihydroxycarboxylic acid derivative

Also Published As

Publication number Publication date
DK0655454T3 (en) 2001-10-08
KR100344363B1 (en) 2002-11-30
EP0655454A1 (en) 1995-05-31
CA2136788A1 (en) 1995-05-31
HU9904356D0 (en) 2000-02-28
IL111793A (en) 1998-12-06
IL111793A0 (en) 1995-01-24
ATE204283T1 (en) 2001-09-15
FI945626A0 (en) 1994-11-29
BR9404776A (en) 1995-11-21
JPH07188260A (en) 1995-07-25
KR950014125A (en) 1995-06-15
PT655454E (en) 2001-12-28
US5618951A (en) 1997-04-08
EP0655454B1 (en) 2001-08-16
ES2159296T3 (en) 2001-10-01
JP3615253B2 (en) 2005-02-02
FI115461B (en) 2005-05-13
HU219466B (en) 2001-04-28
CA2136788C (en) 2005-01-25
DE69427955D1 (en) 2001-09-20
HU9403423D0 (en) 1995-02-28
DE69427955T2 (en) 2002-04-18
FI945626A (en) 1995-05-31
HU224710B1 (en) 2006-01-30
KR100332322B1 (en) 2002-04-13

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Legal Events

Date Code Title Description
MM4A Lapse of definitive patent protection due to non-payment of fees